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How to enable root login in gnome on Debian 6 or 7

Root user login in gnome is disabled on Debian system by default for security reasons. If you want to enable it for specific reasons then follow the below steps :
1. Login into Debian system 2. launch the Root Terminal from Applications -> Accessories. 3. Authenticate with password to launch the Root Terminal. 4. Open "/etc/pam.d/gdm3" with vi. #vi /etc/pam.d/gdm3 5. Look for "auth     required     pam_succeed_if.so  user  != root   quiet_success"  , comment it out as below.
#auth     required     pam_succeed_if.so  user  != root   quiet_success 6. Save the modification with Esc+w+q+Enter keystroke. 7. Restart or reboot Debian system. 8. Login with root user in gnome. You should be now able to login successfully.

How to view contents of xar archived Mac OS X installer packages

Pacifist helps if you want to inspect a downloaded package to see what it will install before installing it. Pacifist opens Mac OS X .pkg package files, .dmg disk images, and .zip, .tar, .tar.gz, .tar.bz2, and .xar archives and allows you to extract individual files and folders out of them. Pacifist can be downloaded from here or here